Methylene-ethyl-methyl ketone.



T all whom it may concern:

FICE.

GEORG MERLING AN-D HUGO KOHLER, OF ELBERFELD, GERMANY, ASSIGNORS TOFARBENFABRIKEN VORM. FRIEDR. BAYER & (30., OF ELBERFELD, GERMANY, A

CORPORATION OF GERMANY.

METHYLENE-ETHYL-METHYL KETONE.

No Drawing.

Specification of Letters Patent.

Patented Jan. 17, 1911.

Be it known that we, GEORG MERLrNe,

professor of chemistry, doctor of philosophy,

and HUGO KoHLER, doctor of philosophy,

chemist, citizens of the German Emp1re,'re-

siding at Elberfeld, Germany, have invented new and useful Improvementsin Methylene- Ethyl-Metheyl Ketone, of which the following is aspecification. a

This application relates tothe manufacture and production of thehitherto unknown methylene-ethyl-methyl ketone. It is obtained bytreating methylketobutanol CH- COCHCH OH:

l on,

with dehydrating agents, such as ZnCl ,sulf'uric acid, KHSO NaHSO,, etc.7

In order to illustrate the new process'more fully the following exampleis given, the parts being by weight: 100 parts of freshly distilledmethlyketobutanol are heated with 50 parts of sodium bisulfate in an oilbath to 120130 C. Water and methyleneethyl-methyl ketone distil overforming two layers. The aqueous layer is removed and the newlketone on,co c: on, y I

is dried with potassium carbonate and distilled. It is a limpid stronglyrefractive oil having a pungent odor and boiling at 98 C. It is solublewith difficulty in water, easily soluble in alcohol, ether and benzeneand is probably formed according to the following formula:

oil having a pungent odor and boiling at 98 C. soluble with difiicultyin water and readily soluble in alcohol, ether and benzene,substantially as described.

In testimony whereof we have hereunto set our hands in the presence oftwo subscribing witnesses.

GEORG MERLING. [L.S.]

HUGO KOHLER. 11s.

Witnesses:

OTTO KoNIo,

CHAS. J. WRIGHT.

